/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.s2graph.counter.util

object SplitBytes {
  def apply(bytes: Array[Byte], sizes: Seq[Int]): Seq[Array[Byte]] = {
    if (sizes.sum > bytes.length) {
      throw new Exception(s"sizes.sum bigger than bytes.length ${sizes.sum} > ${bytes.length}} ")
    }

    var position = 0
    val rtn = {
      for {
        size <- sizes
      } yield {
        val slice = bytes.slice(position, position + size)
        position += size
        slice
      }
    }
    rtn ++ Seq(bytes.drop(position))
  }
}
